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While a Harris victory would no doubt ensure smoother negotiations, there’s still Congress to deal with.

Less than a week after election night in the U.S., the United Nations’ annual climate conference begins in Azerbaijan. COP29, as this year’s conference is called, has climate finance and carbon markets on the agenda. It’s no secret that the outcome of the U.S. presidential election could shift the tenor of negotiations significantly on both topics. Everyone knows there’s one candidate who’s better for the climate and one who will be much, much worse.
Even if Harris wins, however, the United States may well continue to shirk its global climate finance obligations. If the U.S. can’t deliver on what it promises at COP29, it may not matter what actually happens there.
Negotiators at COP29 are tasked with setting what’s called the New Collective Quantified Goal on climate finance, a goalpost for the amount of cash governments must put up to meet global climate investment needs. Global South countries excluding China have suggested that they require more than $1 trillion per year in external finance to meet their climate targets. An agreed-upon NCQG will also help all countries flesh out the latest iteration of their national climate plans, also known as Nationally Determined Contributions, as required by the Paris climate agreement.
And yet preliminary discussions over the summer were inconclusive, not just on the NCQG target itself but also on which countries are expected to contribute and what kinds of financing (e.g. public, private, loans, grants) will count toward it. More controversially to some climate activists and civil society groups, negotiators are also using COP29 to finalize a framework for the implementation of Article 6 of the Paris Agreement, which calls for the creation of a global carbon credit market, which countries could use to trade emissions reductions and contribute to each others’ NDCs.
To put it simply: If Donald Trump wins, not much of this will matter. President Biden’s negotiators can still endorse ambitious NCQG and Article 6 targets, but there’s no evidence a second Trump administration will commit to delivering on them. Should Trump win, the U.S. will almost certainly cut itself out of the global climate finance architecture a second time. The Heritage Foundation’s Project 2025 plan, authored largely by Trump associates, not only calls for the U.S. to slash global climate and development funding (as Trump already called for in his first term) but also to withdraw from global negotiating fora entirely. In the breach, Trump administration diplomats will likely stress the importance of gas and non-renewable energy technologies (such as carbon capture) with an emphasis on ensuring domestic energy security and affordability, even as they prepare to gut most if not all of the Inflation Reduction Act and the Bipartisan Infrastructure Law.
A Kamala Harris victory next week will assuredly be much better for both global emissions reductions and the climate diplomacy landscape. While she has outlined no specific proposals for global climate policy in particular, there is also no evidence that she will renege on any U.S. global commitments made in the past four years or attempt to repeal any climate laws.
As president, she will likely preserve President Biden’s key global climate and development policy initiatives, including the Just Energy Transition Partnerships and the Partnership for Global Infrastructure and Investment. She will also likely support the Biden administration’s push to see the multilateral development banks support more investments in climate and development, particularly through mobilizing the private sector. The current World Bank President, Ajay Banga, was nominated by the United States in early 2023 after serving as co-chair of the Partnership for Central America, a private sector-backed economic development initiative launched by Vice President Harris herself as part of her broader engagement with the region. Their shared history suggests that they will continue collaborating on good terms if Harris is elected.
While none of this is directly connected to COP29 (and putting doubts about the efficacy of these programs aside), it speaks to the Biden-Harris administration’s commitment to, at the very least, platforming global climate and development issues. But will Harris actually deliver on the U.S.’s commitments to the NCQG or otherwise meaningfully increase the amount of public spending devoted to global climate and development goals? Probably not ― although in that case, Congress will be the more likely culprit, not her.
Attempts to appropriate additional funds for global climate programs are cursed with a severe case of legislative inertia. Congress did not significantly slash funding for global climate priorities during the first Trump presidency, but it also did not raise it much during the Biden presidency. Last year’s bipartisan debt limit negotiations didn’t help, of course. But even in the early Biden presidency, when Democrats had their narrow trifecta, Congress massively undershot Biden’s budget requests for global climate-related priorities. In fiscal year 2022, Congress passed less than half of what Biden requested; since then, presidential requests for global climate spending have ballooned in size, while appropriations have stayed flat.
This divergence reflects a stable short-term equilibrium: The Biden administration can showcase the full range of its commitments and bona fides and blame Congress for its failure to deliver on any of them, while Congress can coast on the spending cap deals it made to avoid government shutdowns. But it also ignores the planet-sized elephant in the room — that there’s been no new spending on mitigating climate change. Regardless of who is president, there’s only so much discretionary funding they can ever reallocate toward priority programs absent additional appropriations.
(Here it seems pertinent to remind everyone that the U.S. has never endorsed the global consensus framework of “common but differentiated responsibilities,” which would mean acknowledging a quasi-legal obligation to provide climate finance to Global South countries, on account of the fact that Congress has never been enthusiastic about this. The chances that anyone changes their tone are slim.)
In summary, even if Harris comes out on top on Tuesday, the U.S. will still be stuck in a holding pattern with respect to its global climate priorities. This puts the Biden administration’s COP29 negotiators in a vise: Pushing for a low NCQG gives other countries ground to criticize the U.S.’s inadequate ambition and care for the Global South relative to its ability to contribute, but pushing for an ambitious NCQG also gives other countries greater reason to criticize the U.S. if it fails to deliver. Ambition was never the problem; it has always been the delivery.
Optimistically, a Harris victory at least prevents the U.S. from being a roadblock to other countries’ climate action. But at a time when major Global North donor countries are cutting their aid budgets, American unwillingness to finance solutions to global climate and development challenges makes the rest of the world more dependent on private capital and, in turn, more vulnerable to market downturns, interest rate hikes, and capital outflows. (Alternatively, it makes Global South countries more dependent on petrostate wealth and Chinese imports for macroeconomic stability, although they may be less able to count on large Chinese capital inflows from here on out.) As expert report after expert report has detailed, climate change mitigation or adaptation simply will not happen at scale across the Global South without substantial new external financing.
Still, in lieu of new financing, a Harris administration could stress that efforts to catalyze private investment in the Global South (including through voluntary carbon markets) and reform global taxation also contribute to global decarbonization. And it could continue to argue that the U.S. is doing its part to decarbonize if it manages to pass more landmark climate and green industrialization laws like the Inflation Reduction Act. But it would be false to argue ― as President Biden and Treasury Secretary Janet Yellen have done at times, particularly in 2022 ― that the Inflation Reduction Act helps lower the cost of clean tech uptake across the Global South. This is not true — the credit for making clean technology, particularly solar energy, cheaper and more accessible for the Global South goes decisively to China. The U.S. is nowhere close to becoming a major clean technology exporter or a bona fide partner in green industrial transformation for any Global South country, policymakers’ pretensions to the contrary.
One prominent member of Harris’s advisory team, President Biden’s former National Economic Council Director Brian Deese, is trying to change that, advancing ideas like a “Clean Energy Marshall Plan” as an opportunity to deliver on both domestic industrial policy priorities and demands for global leadership vis-a-vis China; his writing exemplifies how American climate diplomacy is being subsumed into national security planning. (Deese is also a Heatmap contributor.) Tactically, this might work in the near-term: The bill to reauthorize the Development Finance Corporation, which would boost the U.S.’s ability to invest in decarbonization-related priorities across the Global South and particularly critical minerals supply chains, cleared the House Foreign Affairs Committee with bipartisan support over the summer. But this is not a strategy that on its own centers the climate and development needs of Global South countries.
So while a Democratic victory next week would certainly be a step toward continued climate action, and while what the Biden administration negotiates at COP29 will at least set a floor for future U.S. commitments (even if that floor is performative), we won’t see a major departure from the status quo unless a Harris administration can convince legislators that American leadership requires a lot more American money.
“We are not going back” ― this much is true. But it would be nice to go forward, too.
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Most Americans still say they would oppose a data center being built near where they live, but the facilities’ standing has improved among Republicans, a new Heatmap Pro poll finds.
The American public’s backlash against data centers may finally be starting to slow down, although the facilities remain staggeringly unpopular, a new poll finds.
Seventy-one percent of Americans said they would oppose a data center being built near where they live, according to a new Heatmap Pro poll conducted by Embold Research earlier this month.
That is an abysmal finding for technology companies and would-be developers of the computing facilities. But it actually represents an improvement from previous polling, and it suggests one of the fastest shifts in public opinion in recent memory may be tapering off.
That shift has been swift. As recently as September of last year, about 43% of Americans said they would support a data center being built near where they live, and Americans broadly appeared to be evenly split on the infrastructure, according to Heatmap Pro polling. Eleven months later, 75% of Americans told the same poll that they would oppose a nearby data center — a 32 point shift. That monumental turnaround helped make data centers a defining issue in this election cycle.
That backlash has transformed the economics of the data center boom, the largest infrastructure buildout in recent U.S. history. The overwhelming majority of data center projects now face some degree of community opposition, Heatmap Pro reporting suggests. More than $260 billion in proposed data centers have been canceled this year after meeting local opposition. The artificial intelligence company Anthropic even flagged the infrastructure slowdown on Monday when it filed for its initial public offering, which is widely expected to be among the largest ever.
Now our new survey shows that Americans’ rejection of the enormous computing facilities may itself be slowing. The small observed drop, which only slightly exceeds the survey’s margin of error, was driven by a four-point decline in the share of Americans who said they would “strongly oppose” the technology.

While Americans of all parties improved their view of data centers, the change was most pronounced among Republicans. In August, 23% of GOP voters said that they would support a data center being built near where they live. In the new poll, conducted after weeks of favorable campaigning by President Trump, 34% of Republicans said they would support a data center slated for their area, while the share of Republicans who said they would oppose it fell from 66% to 58%. Data centers’ standing among independents improved by nine points during the same period.
Democrats remain largely unified against the infrastructure, and data centers’ improvement among that group was just outside the margin of error.
While Americans of every age, race, gender, and partisan ID remain more opposed to local data center development than in favor of it, their standing has also improved among men since the summer. In August, 21% of men said they would support a data center being built near where they live. Now, 28% of men would support one.
Will America be the land of opportunity for AtkinsRéalis’ tried-and-true CANDU?
Unruffled by President Trump’s taunts of turning Canada into the 51st state, Canadian Prime Minister Mark Carney has vowed to regain leverage over Washington by remaking his nation as an “energy superpower.” Instead of building pipelines from the oil fields of Alberta to American refineries, Ottawa will run them to its West Coast ports to sell crude directly to Asia. Rather than importing electricity from offshore wind farms in the American Northeast, Nova Scotia will build its own turbines and sell the power back to energy-starved New England as the Trump administration thwarts the region’s own buildout.
But Canada’s path to reviving its nuclear industry may run — counterintuitively — through the United States.
Last week, Montreal-based AtkinsRéalis inked a deal with utility Hoosier Energy and the Indiana government to explore building up to 6 gigawatts of reactors in the state. The agreement is only a memorandum of understanding to kick off a study examining potential sites across the state. But it marks the first real effort to export Canada’s unique pressurized heavy-water reactors, called CANDUs, to the U.S., and highlights how America’s domestic nuclear industry has atrophied to the point that foreign developers of large-scale units are racing to establish a beachhead in the world’s largest atomic power market.
“If the Americans had created the CANDU, everyone in the world would know about it,” Joe St. Julian, the American-born president of AtkinsRéalis, told me. “There’s just a cultural difference in the way that the Canadians go about things and the way the Americans do.”
Pronounced “CAN-do,” the upbeat acronym stands for Canada Deuterium Uranium and evokes the government’s post-war, can-do spirit, mustered to help protect its sovereignty during the bipolarity of the Cold War. Developed in the 1950s by Canadian government scientists and now used across the country’s entire nuclear fleet, CANDUs rely on deuterium, a version of hydrogen with an extra neutron, as their “heavy water” coolant to sustain their chains of split atoms. Uranium powers virtually all commercial nuclear reactors, but CANDUs are distinct in that they can run on the raw stuff, rather than enriched uranium. That’s their real advantage: By forgoing the costly and heavily scrutinized enrichment process, Canada can tap its vast resources of mined uranium without facing the bottleneck of the expensive enrichment facilities or attracting the intensive oversight of global regulators monitoring for the production of atomic weapons.
The 17 reactors that provide 15% of Canada’s electricity today are all CANDUs. India’s fleet largely borrowed the technology, and Argentina, China, Romania, and South Korea have all imported their own CANDUs. But the buildout largely stopped in the last century. Canada built its last CANDU in Romania in 2007. The last Canadian CANDU — Unit 4 of the Darlington nuclear plant in Ontario — came online in 1993.
Two years ago, Canada sought to restart its reactor buildout by commissioning its first American-designed unit. Construction began last year on the world’s first BWRX-300, a small modular reactor that uses enriched uranium as fuel. The U.S. plans to build the second version of the same reactor at the Tennessee Valley Authority’s Clinch River site. Whether it can deliver the cost savings SMRs promise remains an open question, given that nuclear developers have historically improved economics by making reactors bigger, not smaller.
But Chris Keefer, a Toronto physician-cum-nuclear advocate who hosts the in-depth energy podcast Decouple, told me he believes Canada’s real error is in benching the CANDU. While Ontario’s government-owned utility “got their backs slapped endlessly for having the courage to go first” in building the inaugural SMR on the continent, “they’re idiots to be investing $21 billion of Canadian ratepayers’ money to prop up an American company with American technology,” he said, colorfully characterizing the move as a massive error and “the result of dis-coordinated decision-making.” (Converted from loonies to U.S. dollars, that figure is about $14.9 billion.)
While Keefer added that he opposes the trade war between Washington and Ottawa, he also recognizes it as a potential opening. “Part of me loves it and this deglobalization moment we’re in, where strategic autonomy and national interest matter,” he said.
The Carney administration has yet to set clear rules on what kind of reactor technology it will support domestically, but it could, in theory, limit access to federal subsidies for provinces and utilities that opt for non-CANDU technologies. For now, however, there appears to be quiet agreement between the U.S. and Canada on bringing the technology south. St. Julian said the Canadian Ministry of Energy has been “very supportive” in talks about providing financing for CANDU exports to the U.S. AtkinsRéalis is also in talks with the U.S. Department of Energy, though a source familiar with that agency’s thinking cast doubt over the possibility that the Trump administration would ultimately fund a Canadian project in the U.S.
None of this was a part of AtkinsRéalis’ long game, St. Julian told me. “The U.S. had four or five of its own reactor technologies,” he said. “Why would it build a foreign technology?” But shortly after Trump returned to office, “We looked at it and realized the U.S. is down to a single large reactor technology: Westinghouse. The other three or four are no longer in business.”
That was the opening AtkinsRéalis needed. “The U.S. made clear it had the aspiration to build 300 new nuclear power stations,” St. Julian went on. “Between Westinghouse and new technologies coming online with SMRs, we said they couldn’t possibly reach their aspiration no matter how optimistic they are about the capacity and supply chain of first-of-a-kind technologies.”
So the company applied to the U.S. Nuclear Regulatory Commission for approval of the CANDU. In June, AtkinsRéalis sent the regulator a formal heads-up about its plans to file an application this past summer, and it expects to complete its second topical report for the NRC by the end of this month.
The CANDUs aren’t the only foreign reactors making a play in the U.S., though. Last month, South Korea unveiled a deal with the Trump administration to fund construction of up to six AP1000s and two APR1400s.
The CANDU does have some drawbacks that the APR1400 doesn’t. The same characteristics that let its reactors sustain fission using raw uranium also cause wear and tear that requires a significant refurbishment every 35 years. (Canada is already funding a campaign of repairs domestically.) And while a typical refueling outage for a light water reactor lasts up to two months and renovations ahead of a relicensing can take up to a year, the refurbishment process for a CANDU can take the unit offline for two years or more.
AtkinsRéalis declined to comment on its internal estimates of the cost of such a refurbishment, which is — among industry experts — widely criticized as costly. But St. Julian said the company guarantees at least two refurbishments in a CANDU’s lifetime, giving each unit a 105-year lifespan. Amortizing the costs over more than a century of electricity production, not to mention the company’s experience building units all over the world, means a CANDU is “a lot less expensive” than rival technologies, he said.
“The APR1400’s biggest advantage is the Korean industrial ecosystem,” Nana Menya Ayensu, a non-resident senior fellow at the Atlantic Council who worked on energy policy in the Biden White House, told me. “But the CANDU has lots of advantages that are specific to the technology in terms of not needing enriched fuel.”
Keefer highlighted another upside he’s acutely aware of due to his day job as an emergency-room doctor: CANDUs are particularly well-suited to batch-producing “enormous amounts” of medical isotopes, such as cobalt-60, used in cancer chemotherapy and the sterilization of surgical instruments, among other uses.
The technology is certainly attracting attention. Last month, Argentina and Romania agreed to work together on more CANDU projects. Weeks later, as I reported, Poland’s state-backed nuclear developer approved a tender for a second nuclear power station, for which it’s considering the CANDU. Last week, Turkey signed an agreement with Carney to cooperate on civilian nuclear energy, putting the CANDU in contention for the country’s second atomic power station.
And earlier this month, Atlas Atomics, a startup backed by Ohio’s Republican gubernatorial candidate Vivek Ramaswamy, raised $400 million in a Series A to commercialize its own pressurized heavy water reactor, in what Keefer dubbed in his newsletter the “AmeriCANDU.”
St. Julian said the new competition shows the unique value of the CANDU. “The difference is, we’ve been doing it for 70 years, and we spent tens of millions of dollars to perfect this technology; they’re just starting,” he said. Then he cracked a half smile. “They have the benefit of being a second movement,” he added. “But, man, we have a big head start.”
Plus, one big opportunity for climate change.
Anthropic is worried about its ability to power data centers.
While much of the company’s more-than-330-page filing for its planned initial public offering focuses on the mundane (executive compensation) and the extraordinary (“existential risks” are mentioned three times), considerable space is devoted to the problems of power.
The word “energy” appears 14 times in the section of the document laying out risks to Anthropic’s business, while “climate” or “climate change” is mentioned four times.
The overarching concern the company has is that it might not get enough power for data centers running its large language models. “Delays in securing energy, water, and other critical services for these facilities could further slow the pace at which newly commissioned compute becomes available for use,” is one representative sample from its risk factors section. The document later notes that “our business may face increased scrutiny related to these activities … including from the investment community and the local communities in which we operate,” in a later section on environmental, social, and governance standards.
Anthropic is also concerned with the pace of the energy infrastructure build-out more generally, noting “the construction of the generation and transmission infrastructure on which we depend is itself capital-intensive and exposed to labor shortages, supply chain disruptions, permitting delays, changes in interest rates, tariffs, other cost overruns, and financing constraints.” These concerns will be familiar to anyone following the debate in Washington, D.C., over permitting reform, which is also centered on making transmission easier and cheaper to build.
Later in the document, Anthropic writes that electricity policy is both highly varied across the country — “Grid-tied electrical supply, for instance, is subject to the jurisdiction of federal and state energy regulators, regional grid operators, and public utility commissions” — and also evolving, noting specifically that “environmental standards applicable to power generation continue to evolve, including as a result of changing governmental priorities and shifting public and political views regarding climate change and the appropriate treatment of various power generation sources.”
The risk of these policies is that they could result in “failure to secure access to adequate electrical power,” which could then “adversely affect our cost structure and limit our ability to scale our compute infrastructure, develop and deploy our models, and service our customers.”
Anthropic also acknowledges energy can be quite expensive, writing that costs are “largely outside of our control” and can “rise sharply during periods of peak demand or constrained supply, and such increases in energy costs could adversely affect our results of operations.”
Anthropic is the charter member of an industry group, along with Nvidia and Google, to promote and enable demand flexibility, which would reduce peak demand — and thus bring down electricity prices and alleviate the need for additional new infrastructure — by having data centers draw down their power usage when demand was at its highest. The company notes that it has also signed on to “voluntary commitments to offset the impact of our data center energy consumption on local communities and electricity ratepayers.” Already, the document says, “these commitments have increased, and we expect will continue to increase, our operating costs.”
And while the document has little to say about climate change per se and even less about sustainability and renewables, it does note that “the physical effects of climate change may increase our operating costs over time, as higher average temperatures can increase the power consumption and water usage required to cool equipment at the facilities on which we depend.”
Climate change also acts as an amplifier for potential disasters that could affect the company. “The impact of climate change may increase these risks,” the company says of “war, terrorist attacks, and other acts of political violence, or any significant natural disaster, such as an earthquake, fire, hurricane, tornado, flood, or significant power outage.”
Specifically, Anthropic calls out climate-related risk specific to the Bay Area, where it is headquartered. Or, as it bloodlessly describes it, “a region known for seismic activity and increasingly for the threat of fires.”
Otherwise, climate change and sustainability policy is largely seen as a regulatory and cost burden. For example, “regulations relating to [environmental, social, and governance] matters, including environmental sustainability and climate change, are under consideration, being adopted, or being rolled back or revised, which may impact our necessary disclosures and increase compliance costs,” and “sustainability initiatives, goals, or commitments could be difficult to achieve or costly to implement.”
It notes a variety of California, European Union, and United Kingdom climate disclosure laws “will require the dedication of significant time and resources” while also observing that “across the United States ... enacted or proposed ‘anti-ESG’ policies or legislation or have issued related legal opinions,” which could “expose any sustainability, employment, governance, or other corporate practices we adopt to the risk of litigation, antitrust investigations or challenges by federal or state authorities, and result in injunctions, penalties, and reputational harm.”
The document is far less detailed about what Anthropic and its products could do to alleviate or prevent climate change and its effects. This is not surprising for a regulatory filing concerned with disclosing corporate information and outlining risks to investors — but the filing is also supposed to explain the business opportunities it sees as well. In that regard, climate is relegated to a laundry list of potential scientific projects Anthropic’s products could be helpful with. “Claude is also being applied to pressing global problems in scientific research, drug discovery, education, and climate analysis,” it writes.
If its S-1 is any indication, there will be a lot of work to do.